diff --git a/README.md b/README.md
index 0342313..77747c9 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@
 + taging: [ctags](https://github.com/universal-ctags/ctags), [gtags](https://www.gnu.org/software/global/)
 + utilities: [bat](https://github.com/sharkdp/bat), [delta](https://github.com/dandavison/delta)
 + [nerd font](https://github.com/ryanoasis/nerd-fonts)
-+ C family tools: [clangd](https://clangd.llvm.org/), cppcheck, clang-format, etc
++ C family tools: [clangd](https://clangd.llvm.org/), cpplint, clang-format, etc
 + shells: [shellcheck](https://github.com/koalaman/shellcheck), [shfmt](https://github.com/mvdan/sh)
 + [vim-vint](https://github.com/Vimjas/vint)
 + [bash-language-server](https://github.com/bash-lsp/bash-language-server)
diff --git a/autoload/aceforeverd/completion.vim b/autoload/aceforeverd/completion.vim
index 668e3b9..95a312c 100644
--- a/autoload/aceforeverd/completion.vim
+++ b/autoload/aceforeverd/completion.vim
@@ -199,6 +199,7 @@ function! aceforeverd#completion#init_source_coc() abort
                 \ 'coc-fzf-preview', 'coc-xml',
                 \ 'coc-translator', 'coc-cmake',
                 \ 'coc-metals', 'coc-emoji',
+                \ 'coc-markdownlint'
                 \ ]
 
     function! s:coc_maps() abort
diff --git a/coc-settings.json b/coc-settings.json
index 863d561..ebafccf 100644
--- a/coc-settings.json
+++ b/coc-settings.json
@@ -29,12 +29,17 @@
       "filetypes": ["kotlin"]
     }
   },
+  // coc-pyright
+  "python.pythonPath": "python3",
+  "python.formatting.provider": "yapf",
+  // diagnostic-languageserver
   "diagnostic-languageserver.filetypes": {
     "vim": "vint",
     "sh": "shellcheck",
-    "markdown": ["write-good", "markdownlint"],
+    "markdown": ["write-good"],
     "cpp": ["cpplint"],
-    "dockerfile": ["hadolint"]
+    "dockerfile": ["hadolint"],
+    "python": ["mypy", "pylint"]
   },
   "diagnostic-languageserver.formatFiletypes": {
     "sh": "shfmt"
diff --git a/vimrc.vim b/vimrc.vim
index 08026d6..8e10e04 100644
--- a/vimrc.vim
+++ b/vimrc.vim
@@ -127,7 +127,6 @@ if dein#load_state(s:dein_repo)
     call dein#add('Shougo/neco-vim')
     call dein#add('Shougo/neoyank.vim')
     call dein#add('Shougo/echodoc.vim')
-    call dein#add('Shougo/deol.nvim')
 
     call dein#add('voldikss/vim-floaterm')